Search for dissertations about: "viscoelastic damping"

Showing result 1 - 5 of 18 swedish dissertations containing the words viscoelastic damping.

  2. 1. Improving Machining System Performance through designed-in Damping : Modelling, Analysis and Design Solutions

    Author : Lorenzo Daghini; Cornel Mihai Nicolescu; Miroslav Píška; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machining performance; Cutting stability; Passive damping; High Damping Interface; Boring bar; Turret; SRA - Production; SRA - Produktion;

    Abstract : With advances in material technology, allowing, for instance, engines to withstand higher combustion pressure and consequently improving performance, comes challenges to productivity. These materials are, in fact, more difficult to machine with regards to tool wear and especially machine tool stability. READ MORE

  4. 2. On passive and active control of machining system dynamics : analysis and implementation

    Author : Amir Rashid; Cornell Mihai Nicolescu; Drogos A. Axinte; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; machining system; chatter; productivity; palletised workholding; damping; tuned viscoelastic damper; Manufacturing engineering; Produktionsteknik;

    Abstract : .... READ MORE

  5. 3. A study of active-passive damping treatments

    Author : Hélène Illaire; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active vibration control; damping mechanisms; active constrained layers;

    Abstract : Active Constrained Layer (ACL) treatment is a vibration-damping treatment which consists of a viscoelastic layer constrained by an actuator. It dissipates energy simultaneously by the shearing of the viscoelastic layer and by the action of the actuator. READ MORE

  6. 4. Joint Interface Effects on Machining System Vibration

    Author : Qilin Fu; Cornel-Mihai Nicolescu; Tomas Beno; KTH; []
    Keywords : Joint Interface; Vibration; Damping; Chatter; Machining; Carbon NanoComposite; PECVD; HiPIMS; SRA - Production; SRA - Produktion; Järnvägsgruppen - Ljud och vibrationer; Järnvägsgruppen - Ljud och vibrationer;

    Abstract : Vibration problems are still the major constraint in modern machining processes that seek higher material removal rate, shorter process time, longer tool life and better product quality. Depending on the process, the weaker structure element can be the tool/tool holder, workpiece/fixture or both. READ MORE

  7. 5. Impact damping and airplane towing : two studies of the response of solid bodies to transient loads

    Author : Carlos Matuk; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : The impact of a linearly elastic hammer on a linearly viscoelastic plate is the first problem considered in this thesis. The results, obtained by using the Laplace transformation method, can be used in the design of impact protection devices. READ MORE